Hawiyyat Najm, known as Bimmah Sinkhole in English, is a water-filled sinkhole in the limestone of eastern Muscat Governorate in Oman. The sinkhole was formed by a collapse of the surface layer due to dissolution of the underlying limestone. However, locals used to believe this sinkhole in the shape of a water well was created by a meteorite.The Arabic name Hawiyyat Najm means “the deep well of the (falling) star”.
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